I just recently completed these also. Another thing I learned, by experience, is to make sure your torque-sensing differential (or whatever it's called) is set to 50-50 for the gravel and snow, but don't forget to change it back to something like 30-70 when you go to the tarmac.
This is the one where you have to use the rally car, right? I used the Citroen C4 and it works well. It's also easier if there's not another C4 in the group, so if there is, you can exit and restart to get an easier group.